CompTIA Security+ (SY0-501) — Question 493

A company is developing a new system that will unlock a computer automatically when an authorized user sits in front of it, and then lock the computer when the user leaves. The user does not have to perform any action for this process to occur. Which of the following technologies provides this capability?

Answer options

• A. Facial recognition
• B. Fingerprint scanner
• C. Motion detector
• D. Smart cards

Correct answer: A

Explanation

Facial recognition technology allows for automatic unlocking of a computer by identifying the authorized user's face, making it the correct choice. Fingerprint scanners require physical contact, motion detectors can sense presence but do not unlock systems, and smart cards require the user to physically present the card, all of which do not meet the criteria of being completely hands-free.